This is a Lunsford 3.5mm x 1 3/8" "Super Duty Plus" Titanium Turnbuckle Kit with
included Ball Cups. Lunsford turnbuckles are CNC machined and thread
rolled in house from domestic US 6AL/4V grade titanium. If you want to
put your car on a diet, this is one of the best places to start
eliminating weight, without sacrificing strength.